html {
    font-size: 100px;
}

* {
    font-size: .14rem;
    margin: 0;
    padding: 0;
    list-style: none;
    text-decoration: none;
    font-family: "微软雅黑";
    box-sizing: border-box;
}

body {
    -webkit-user-select: none;
    -webkit-touch-callout: none;
}

button,
textarea,
select,
input {
    appearance: none;
}

a {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0)
}

html,
body {
    width: 100%;
    height: 100%;
}

.container {
    width: 50%;
    margin: 0 auto;
    height: auto;
    position: relative;
    .ulla {
        width: 50%;
        height: auto;
        margin: 0 auto;
        li {
            img {
                width: 100%;
                display: block;
            }
        }
        li:not(:first-child) {
            display: none;
        }
    }
    .olla {
        position: absolute;
        bottom: 30px;
        left: 32%;
        li {
            float: left;
            background-color: rgb(221, 243, 21);
            color: #000;
            padding: 8px 12px;
            margin: 0 5px;
            cursor: pointer;
        }
    }
    .btnArr {
        position: absolute;
        top: 40%;
        width: 100%;
        display: none;
    }
    .btnArr span {
        color: #fff;
        background: rgba(0, 0, 0, .5);
        padding: 10px 15px;
        cursor: pointer;
        font-size: 24px;
        font-weight: bold;
        margin: 0 10px;
        border-radius: 50%;
        line-height: 90px;
        text-align: center;
    }
    .btnArr span:nth-child(1) {
        float: left;
    }
    .btnArr span:nth-child(2) {
        float: right;
    }
    #olla {
        .current {
            background: #3b89ff;
            color: #fff;
        }
    }
}